Static reducing device



Se t. V18, 1934. .1. A. MCGOVERN 1,974,189

STATIC REDUCING DEVICE Filed April 25, 1930 INVENTOR ATTORNEY FatentedSept. 18, 1934 This invention relates to clarifiers for radio receiverscompact and effective clarifier which may be attached to the ordinaryreceiving sets in com- 11101). use.

A particular object of my invention is to eliminate which Fig. 1 is aside view or" the clarifier, showing in diagram the manner of connectingit with a radio receiving set.

The clarifier illustrated has a dielectric tube 1 containing mercury 3and substance ductivity a small air bubble 4 to permit expansion of thecontents of the tube. the tube are sealed by stoppers A3, B3 consistingof rubber minal B projects through the center of stopper B3 and has anend Bl extending well within said tube.

3 at the other end of said tube. of terminal A extends within tube 1distance and has a disc A2 consisting of copper or other conductingmaterial attached there- In the preferred form of my device, graphite issuspended in the water to increase the conductivity weights of the waterand graphite composing said suspension are, respectively, 80:1. Tube 1has a length of approximately four and one-half inches and an internaldiameter of three-eighths of an inch, and

air s'rrss Ar STATl-IC REDUCING DEVICE James A. McGovern, New York, N.Y. Application April 23, 1930, Serial No. 446,476 1 Claim. (Cl. 25020)and aims to provide an inexpensive,

tube is placed in a primary coil 8.

interference caused by atmospheric or In the operation of securing clearreception tact with the water.

respective surfaces of a detailed descripstatic eliminator emwater 2having a to increase the con- Tube 1 also contains added thereto of saidwater.

The respective ends of mercury 3 and end B1 or any other insulatingmaterial. Terinvention, it is to be Terminal A projects through stopperAn end A1 for a short What is claimed is:

A static eliminator of said water and the proportionate terminalextending container and in cury and said water.

the proportionate volumes of mercury 3 and Water 2 To attach theclarifier to a receiving set, the horizontal position, terminal A isconnected to wire 5 leading from aerial 6, and terminal B is connectedto may be made in the construction thereof without departing from theinvention.

FFiQi are, respectively, 1:3.

wire 7 leading to the clarifier, it is necessary that end B1 of terminalB have a relatively large surface in contact with the water, but that nopart of said end be in contact with and that disc A2 be in contact withsaid mercury, but it is immaterial whether said disc mercury 3 is incon- It is also necessary that the the mercury and the water in contactwith each other he comparatively large.

To accomplish these results, tube 1 is in a horizontal position when inoperation and the mercury 3 which is immiscible with, and heavier than,the water 2 sinks to the lower portion of the tube, thus presenting ofmercury in contact with said water. B1 of the terminal B is composedfine wire extending well Within along its axis, and the quantity ofmercury 3 is such that it does not extend to said axis, so that the endB1 is entirely surrounded by Disc A2 is of a circumference slightly lessthan the inner circumference of tube 1. fixed transversely within saidtube, and near one end thereof. Thus, disc placed a large surface Theend of a relatively said tube and water 2.

Said disc is A2 is in contact with is in contact with water 2 only,regardless of what point on the circumference of horizontal tube 1 isuppermost.

Having described a specific embodiment of my understood that changes forradio apparatus consisting of a dielectric container, mercury, water,and means to increase the conductivity of said water, therein, aterminal extending through one end of, and Well within, said containerand in direct contact with said water only, and a second through theother end of said direct contact with said mer- JAMES A. MCGOVERN.

